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8,8-Dimethyl-8,9-dihydro-7H-chromeno[2,3-b]quinoline-10,12-dione.

ABSTRACT: In the title compound, C(18)H(15)NO(3), the fused benzopyran and pyridine rings are essentially coplanar [r.m.s. deviation = 0.0533?Å with a maximum deviation of 0.080?(1)?Å for a benzene C atom]. The cyclo-hexa-none ring adopts an envelope conformation with the dimethyl-substituted C atom 0.660?(2)?Å out of the plane formed by the remaining ring atoms (r.m.s. deviation = 0.0305?Å). The dihedral angle between the mean planes of the pyran and cyclo-hexa-none rings is 12.95?(6)°. In the crystal, mol-ecules are linked via C-H?O hydrogen bonds, leading to chains running along [011].

SUBMITTER: Srinivasan T

PROVIDER: S-EPMC3569786 | biostudies-other | 2013 Feb

REPOSITORIES: biostudies-other

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8,8-Dimethyl-8,9-dihydro-7H-chromeno[2,3-b]quinoline-10,12-dione.

Srinivasan Thothadri T Yuvaraj Panneerselvam P Reddy Boreddy S R BS Velmurugan Devadasan D

Acta crystallographica. Section E, Structure reports online 20130119 Pt 2

In the title compound, C(18)H(15)NO(3), the fused benzopyran and pyridine rings are essentially coplanar [r.m.s. deviation = 0.0533 Å with a maximum deviation of 0.080 (1) Å for a benzene C atom]. The cyclo-hexa-none ring adopts an envelope conformation with the dimethyl-substituted C atom 0.660 (2) Å out of the plane formed by the remaining ring atoms (r.m.s. deviation = 0.0305 Å). The dihedral angle between the mean planes of the pyran and cyclo-hexa-none rings is 12.95 (6)°. In the crystal, m ...[more]

PMID: 23424532

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